Burner nozzle

ABSTRACT

Burner nozzle having nozzle bores arranged in one row or in several rows with cuts running through the axes of the bores. Each nozzle bore having a larger cylindrical channel, a diminishing channel and a nozzle outlet as a smaller cylindrical channel.

United States Patent 1191 Roger Apr. 1, 1975 [5 BURNER NOZZLE 1,742,607 1/1930 Machlet et al 239/552 x 2,210,069 3/1940 [76] Invent: schlucmerhede 2,219,827 10/1940 Molt et al 239/557 x Berg- Gladbach Germany 2,252,320 8/l94l Hughey 239/566 x 2,385,107 9/1945 Scherl 239/566 x [221 July 1973 2,484,123 10/1949 SChCl'l 29/157 c [21] Appl. No.2 393,119 2,499,482 3/1950 Flynn 239/552 x 2,501,724 3/1950 Hughey 239/549 [52] US Cl 239/557 Primary Examiner-Robert S. Ward, .11. 51 1m. (:1 B05!) 1/04, B05b 110 130513 1/16 Amway Stem [58] Field of Search 239/548, 549, 552, 554,

239/555-557, 566, 567, 568, 595, 600, 60!; [571 ABSTRACT 29 57 C Burner nozzle having nozzle bores arranged in one row or in several rows with cuts running through the [56] References Cited axes of the bores. Each nozzle bore having a larger cy- UNn-ED STATES PATENTS lindrical channel, a diminishing channel and a nozzle 1,024,26l 4/1912 Huston 239/552 x outlet as a smaller cylmdmal channel 1,642,426 9/1927 Risingcr 29/157 C 4 Claims, 14 Drawing Figures FATEHTEB AFR vvvvvvvvvvvvvvvvvvr BURNER NOZZLE The present invention is directed to a burner nozzle with several nozzle bores arranged in one row or in several rows situated side by side.

A known burner nozzle of this kind consists of a square body in which the nozzle bores are arranged. Owing to the bores such a nozzle can only be manufactured at great expenditure. This applies in particular if the cross sections of the bores in axial direction are different. In addition the shape of the flame of such a burner nozzle is determined by the form and the arrangement of the nozzle bores.

With another burner nozzle open nozzle channels are provided on the opposite sides of a nozzle body in the axial direction. The body of the nozzle is lodged in a casing whose inside walls close the open channels in the axial direction. Owing to the open channels in the axial direction the expenditure of manufacturing such a burner nozzle is low compared with that of the beforementioned burner nozzle; but additional inside walls for the closing of the channels must be provided and the shape of the flame of such a nozzle is determined from the first.

SUMMARY OF THE INVENTION The object of the invention is to produce in a simple way a burner nozzle on which the nozzle bores are arranged in a row and whose flame shape is variable.

With a burner nozzle with several nozzle bores arranged in one row or in several rows situated side by side this object is achieved by dividing the burner nozzle along the row or the rows, with the cuts running through the axes of the nozzle bores.

Because each nozzle bore consists of two open bore halves they can be formed, quickly and without difficulty, in the adjacent sides of the parts of the burner nozzle even if the cross sections of the nozzle bores in the axial direction are different. The shape ofthc flame can be adjusted as desired because the parts of the burner nozzle can be staggered with respect to the halves of the nozzle bores.

The burner nozzle consists preferably of straight slats movable against each other and transvc rsely to the nozzle bores or of annular rings movable against each other and transversely to the nozzle bores and in whose adjacent lateral faces the halves of the nozzle bores are provided. With such burner nozzles the shape of the flame can be altered even in operation by moving the slats or the annular rings respectively. This displacement does not alter the surface of the cross sections of the nozzle bores but the form of the cross sections.

In a functional design the halves of the nozzle bores of adjacent rows are provided, for at least two rows of nozzle bores. in the opposite side faces of the same part of the burner nozzle, e.g., the same slat or the same annular ring. In this way inconvenient parting lines between the individual rows of the nozzle bores are avoided.

Within the scope of the invention it is also possible that at least some nozzle bores branch off smaller nozzle bores for supporting flames which are provided in at least one of two adjacent parts of the burner nozzie according to the remaining halves of the nozzle bores. 6

smaller cylindrical channel as nozzle outlet. In order to achieve a tight flame field the halves of the nozzle bores in the same part can be staggered by half their distance in the direction of the flow on its opposite sides.

Another object of the invention is a process for the production of a burner nozzle which is thus characterized: that at least two bodies are manufactured which can be placed tightly together with their even lateral faces and that halves of the nozzle bores continuing from one extremity to the other are formed in these even lateral faces in such a way that the individual halves of the nozzle bores formed at the lateral faces placed together will complement one another to provide complete nozzle bores. The forming of the nozzle bores can be effected by milling, embossing, curling or suchlilte. If the channels are to have different cross sections and are to be milled this will preferably be done in several stages. If they are embossed this can of course be done in one stage by means of a suitably shaped embossing die. Copper or sintered metal are chiefly used as material for the burner nozzles.

BRIEF DESCRIPTION OF THE DRAWINGS The invention is further explained below by means of drawings showing examples of construction wherein:

FIG. 1 is a top view of a cut of a burner nozzle with several rows of nozzle bores situated side by side,

FIG. 2 is a cross-sectional view of the burner nozzle according to FIG. I,

FIG. 3 is a top view of a cut from a burner nozzle with a row of nozzle bores whose halves of nozzle bores are staggered by half the diameter,

FIG. 4 is a top view of the burner nozzle according to FIG. 3 with the halves of the nozzle bores staggered by their diameter,

FIG. 5a is a side view of a half of a nozzle bore,

FIG. 5b is a top view of a cut of a part of a burner nozzle with the halves of the nozzle bores arranged on opposite sides according to FIG. 5a,

FIG. 6a is a side view of another half of the nozzle bore,

FIG. 6b is a top view of a cut of a part of a burner nozzle with the halves of the nozzle bores arranged in opposite sides according to FIG. 6a.

FIG. 7a is a side view of another half of the nozzle bore with smaller halves of nozzle bores for supporting flames,

FIG. 7b is a top view of a cut of a part of a burner nozzle with the halves of the nozzle bores arranged in opposite sides according to FIG. 7a,

FIG. 8 is a cross-sectional view of a part of a burner nozzle with the halves of the nozzle bores arranged in opposite sides according to FIGS. 50 and 5b or 60 and 6h or 7a and 7h, through the axis of the halves of the nozzle bores,

FIG. 9 is a cross-sectional view of a burner with a burner nozzle according to FIG. I.

FIG. 10 is a vertical, longitudinal cross-sectional view of the burner according to FIG. 9, and

FIG. 1] is a top view, partly in horizontal cross section of the burner according to FIG. 9.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The burner nozzle according to the invention possesses at least one row I of nozzle bores (FIGS. 3 and 4). A cut 2 is put through the axis of the nozzle bores which subdivides the burner nozzle into two parts 3 and 4 which can be staggered. Each nozzle bore is composed of two halves 5 and 6. The distance of the individual nozzle bores from each other is at least equal to the diameter so that from each nozzle bore, by stagger ing the halves S and 6 against each other. two smaller channels with halt the cross section of the nozzle bore can be produced. The shape ofthe flame can be altered by this staggering of the halves S and 6 of the nozzle bores. ln FlGS. l and 2 a burner nozzle is shown which possesses four rows of nozzle bores. The nozzle bores are formed in the adjacent sides of the individual parts 7. 8. 9, l0 and ll. The middle parts 8. 9 and 10 have the halves of the nozzle bores on the opposite sides while the outer parts 7 and ll possess halves ofthe nozzle bores on one side only. The nozzle bores of adjacent rows are staggered by half their distance. In this exam ple of construction. torn the parts 7 ll of the burner nozzles can be staggered against each other so that the shape of the flame can be altered.

in H05. 1 4 the parts are designed as straight, even slats But within the scope ot'the invention other forms for the parts are possible as well, in particular annular rings which can also be staggered in operation in order to alter the shape of the flame The halves of the nozzle bores can have the forms shown in FIGS. Su 51: 6a, 6b 7a, 7b and 8. Each halt of the nozzle bores consists of a channel with a larger cross section I2. 13. I4, 15. 16, l7, l8 and I9, ola diminishing channel 20. 2], 22. 23 and 24. and a cylindrical channel with a smaller cross section as nozzle outlet 25. 27. 28. 30. 3], 33, and 35. From the channel with a larger cross section 16 and 17, open channels with a comparatively small cross section 36, 37, 38 and 39 branch off as channels for supporting flames. Since all the channels are open they can be formed without difficulty whether by milling, pressing or suchlike. The machining operation depends on the material used for the burner nozzle. lf for instance sintcred metal is used the form will be pressed in; if copper is used it will be milled preferably, and that in at least two steps, the channel with the larger cross section and the transition area being milled in the first step and the channel with the smaller cross section in the second step.

With the burner shown in FIGS. 9 ll the slatformed parts 7 ll of the burner nozzle are arranged in the head 40 of a casing 41. The lateral walls of the head press the individual parts 7 I] with their adjacent surfaces tightly together so that the gas can only effusc through the nozzle bores from the casing 41. The head 40 has an opening 42 in the area of the nozzle bores. The gas admission to the casing 41 is effected through a gas pipe 43. placed within the casing 41. which in its upper area and distributed over its length possesses several apertures 44 and 45. Two riders 46 and 47 are placed on the crown of the pipe 43 which support the slat-formed parts 7 ll of the burner nozzle on cutter heads. The middle slat-formed parts 8. 9 and [0 can be moved towards each other and with respect to the outer, slat-formed parts 7 and H in a longitudinal direction. For this purpose clearances 48 and 49. filled with fitting pieces shaped correspondingly, are provided at each end of the middle, slat-formed parts 8. 9 and I0.

I claim:

1. A burner nozzle l'or gaseous flow comprising a plurality of outer rows of sections; at least one inner section between the outer rows of sections; halves of nozzle bores formed on both outer surfaces of the at least one inner section facing the outer rows of sections and on surfaces of the outer rows of sections facing the at least one inner section, the distance from one of the halves ofnozzle bores to another being equal to at least the diameter of the bore and the outer rows of sections and the at least one inner section being movable against each other and transversely to the halves of the nozzle bores to adjust gaseous flow.

2. The burner nozzle according to claim 1. wherein the outer rows of sections and the at least one inner section comprise straight slats.

3. The burner nozzle according to claim 1, wherein the outer rows of sections and the at least one inner section comprise annular rings.

4. The burner nozzle according to claim I, wherein each of the halves of the nozzle bores comprises a cylindrical channel of larger cross section, and a cylindrical channel of smaller cross section as a nozzle outlet with a channel diminishing in the direction of gaseous tlow connecting the cylindrical channels. 

1. A burner nozzle for gaseous flow comprising a plurality of outer rows of sections; at least one inner section between the outer rows of sections; halves of nozzle bores formed on both outer surfaces of the at least one inner section facing the outer rows of sections and on surfaces of the outer rows of sections facing the at least one inner section, the distance from one of the halves of nozzle bores to another being equal to at least the diameter of the bore and the outer rows of sections and the at least one inner section being movable against each other and transversely to the halves of the nozzle bores to adjust gaseous flow.
 2. The burner nozzle according to claim 1, wherein the outer rows of sections and the at least one inner section comprise straight slats.
 3. The burner nozzle according to claim 1, wherein the outer rows of sections and the at least One inner section comprise annular rings.
 4. The burner nozzle according to claim 1, wherein each of the halves of the nozzle bores comprises a cylindrical channel of larger cross section, and a cylindrical channel of smaller cross section as a nozzle outlet with a channel diminishing in the direction of gaseous flow connecting the cylindrical channels. 